MAX113/MAX117 19-1081 Rev 1 8/96 +3V, 400ksps, 4/8-Channel, 8-Bit ADCs with 1A Power-Down General Description Features +3.0V to +3.6V Single-Supply Operation The MAX113/MAX117 are microprocessor-compatible, 8-bit, 4-channel and 8-channel analog-to-digital con- 4 (MAX113) or 8 (MAX117) Analog Input Channels verters (ADCs). They operate from a single +3V supply Low Power: 1.5mA (operating mode) and use a half-flash technique to achieve a 1.8s con- 1A (power-down mode) version time (400ksps). A power-down pin (PWRDN) Total Unadjusted Error 1LSB reduces current consumption to 1A typical. The devices return from power-down mode to normal oper- Fast Conversion Time: 1.8s per Channel ating mode in less than 900ns, allowing large supply- No External Clock Required current reductions in burst-mode applications. (In burst Internal Track/Hold mode, the ADC wakes up from a low-power state at Ratiometric Reference Inputs specified intervals to sample the analog input signals.) Both converters include a track/hold, enabling the ADC Internally Connected 8th Channel Monitors to digitize fast analog signals. Reference Voltage (MAX117) Microprocessor (P) interfaces are simplified because the ADC can appear as a memory location or I/O port Ordering Information without external interface logic. The data outputs use latched, three-state buffer circuitry for direct connection PART TEMP. RANGE PIN-PACKAGE to an 8-bit parallel P data bus or system input port. MAX113CNG 0C to +70C 24 Narrow Plastic DIP The MAX113/MAX117 input/reference configuration MAX113CAG 0C to +70C 24 SSOP enables ratiometric operation. MAX113C/D 0C to +70C Dice* The 4-channel MAX113 is available in a 24-pin DIP or MAX113ENG -40C to +85C 24 Narrow Plastic DIP SSOP. The 8-channel MAX117 is available in a 28-pin MAX113EAG -40C to +85C 24 SSOP DIP or SSOP. For +5V applications, refer to the MAX114/MAX118 data sheet. MAX113MRG -55C to +125C 24 Narrow CERDIP** Ordering Information continued at end of data sheet. Applications *Dice are specified at T = +25C, DC parameters only. A Battery-Powered Systems Portable Equipment **Contact factory for availability. System-Health Monitoring Remote Data Acquisition Pin Configuration appears at end of data sheet. Communications Systems Functional Diagram REF+ D7 4-BIT *IN8 D6 FLASH *IN7 ADC D5 *IN6 (4MSBs) D4 *IN5 IN4 MUX 4-BIT THREE- IN3 DAC STATE OUTPUT IN2 DRIVERS IN1 REF+ D3 4-BIT 16 FLASH D2 ADC D1 (4LSBs) D0 ADDRESS LATCH TIMING AND DECODE CONTROL MAX113/MAX117 A1 A2 REF- A0 PWRDN RD CS *MAX117 ONLY MODE WR/RDY INT Maxim Integrated Products 1 For free samples & the latest literature: +3V, 400ksps, 4/8-Channel, 8-Bit ADCs with 1A Power-Down ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +7V 28 Wide Plastic DIP DD Digital Input Voltage to GND......................-0.3V to (V + 0.3V) (derate 14.29mW/C above +70C) ................................1.14W DD Digital Output Voltage to GND ...................-0.3V to (V + 0.3V) 28 SSOP (derate 9.52mW/C above +70C).................762mW DD REF+ to GND..............................................-0.3V to (V + 0.3V) 28 Wide CERDIP (derate 16.67mW/C above +70C)....1.33W DD REF- to GND...............................................-0.3V to (V + 0.3V) Operating Temperature Ranges DD IN to GND .................................................-0.3V to (V + 0.3V) MAX113C G/MAX117C I ....................................0C to +70C DD Continuous Power Dissipation (T = +70C) MAX113E G/MAX117E I ..................................-40C to +85C A 24 Narrow Plastic DIP MAX113MRG/MAX117MJI..............................-55C to +125C (derate 13.33mW/C above +70C) ................................1.08W Storage Temperature Range .............................-65C to +150C 24 SSOP (derate 8.00mW/C above +70C).................640mW Lead Temperature (soldering, 10sec) .............................+300C 24 Narrow CERDIP (derate 12.50mW/C above +70C) .....1W Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +3V to +3.6V, REF+ = 3V, REF- = GND, Read Mode (MODE = GND), T = T to T , unless otherwise noted.) DD A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ACCURACY (Note 1) Resolution N 8 Bits Total Unadjusted Error TUE 1 LSB Differential Nonlinearity DNL No-missing-codes guaranteed 1 LSB Zero-Code Error 1 LSB Full-Scale Error 1 LSB Channel-to-Channel Mismatch 1/4 LSB DYNAMIC PERFORMANCE MAX11 C/E, f = 400kHz, f = 30.273kHz 45 Signal-to-Noise Plus SAMPLE IN SINAD dB Distortion Ratio MAX11 M, f = 340kHz, f = 30.725kHz 45 SAMPLE IN MAX11 C/E, f = 400kHz, f = 30.273kHz -50 SAMPLE IN Total Harmonic Distortion THD dB MAX11 M, f = 340kHz, f = 30.725kHz -50 SAMPLE IN MAX11 C/E, f = 400kHz, f = 30.273kHz 50 Spurious-Free Dynamic SAMPLE IN SFDR dB Range MAX11 M, f = 340kHz, f = 30.725kHz 50 SAMPLE IN Input Full-Power Bandwidth V = 3Vp-p 0.3 MHz IN Input Slew Rate, Tracking 0.28 0.5 V/s ANALOG INPUT Input Voltage Range V V V V IN REF- REF+ Input Leakage Current I GND < V < V 3 A IN IN DD Input Capacitance C 32 pF IN REFERENCE INPUT Reference Resistance R 12 4 k REF REF+ Input Voltage Range V V V REF- DD REF- Input Voltage Range GND V V REF+ 2 MAX113/MAX117